In my location, they both have a difference of only $2. Although corsair delivers 80watts more, i don't really need it. I just want to choose which one would be better for my system. I heard there are Haswell certified PSUs? Since i'm using an i74770 and R9280x.. Which one would be better? Which one has better build quality, stability etc.? They are both Tier 2 A PSUs but i can't choose which one is better for me.